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Finding the Fourth Proportional to 69,217.92, 103,916.16 and 59,420.16

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Solution

The fourth proportional to 69,217.92, 103,916.16 and 59,420.16 is: 89,206.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,217.92 : 103,916.16 = 59,420.16 : x
  2. Step 2: Convert to fraction form
    69,217.92/103,916.16 = 59,420.16/x
  3. Step 3: Cross multiply
    69,217.92x = 103,916.16 × 59,420.16
  4. Step 4: Simplify right side
    69,217.92x = 6,174,714,853.79
  5. Step 5: Solve for x
    x = 6,174,714,853.79/69,217.92
  6. Step 6: Final answer
    x = 89,206.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.